Floor cleaning extraction base portion



FIG. 1 is a front perspective view of a floor cleaning extraction base portion which embodies our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof,

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a rear perspective view thereof.

The material in dotted lines forms no part of our design. 

The ornamental design for a floor cleaning extraction base portion, as shown and described. 